Engineering secure passkey sync in Microsoft Password Manager

Passkeys are designed to replace passwords with strong, phishing-resistant credentials that make sign-in quick, easy, and secure. With Microsoft Password Manager, users can now save and sync passkeys across devices signed in with their Microsoft account. Syncing passkeys enables a seamless sign-in experience, allowing users to access their credentials wherever they are signed in. Instead of being tied to a single device, passkeys can be securely available across devices while continuing to leverage device-based authentication such as biometrics or PIN.